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Old 12-03-2003, 08:45 PM
grumpy5 grumpy5 is offline
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Re: 99 2500 7.4 L Hard Start

Rod, Ihave the same vehicle.Ihave had the same problemwith the rough idle.Ituned it up with new wires cap rotor, and plugs. I made the mistake of putting Bosch plugs in. They made it run worse!
If you tune it up use the ac delco plugs. My sub still idles a little rough but not as bad as before.As far as your hard start problem; does it occur after you have been driving for an hour or sitting for an hour? Can you hear the fuel pumprun befor eyou start it on the second attempt? You may want to change the fuel filter as a precaution.
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